JAMB - Mathematics (1984 - No. 11)

A trader in country where their currency 'MONI'(M) is in base five bought 1035 oranges at M145 each. If he sold the oranges at M245 each, what will be his gain?
1035
10305
1025
20025
30325

Explanation

Total cost of 1035 oranges at N145 each

= 1035 x 145

= 20025

Total selling price at N245 each

= (103)5 x 245

= 30325

Hence his gain = 30325 - 20025

= 10305

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